Celebrity Celebrity Moms Naomi Watts Celebrates Her Look-Alike Son Sasha's 9th Birthday with Sweet Instagram Message By Meghan Overdeep Meghan Overdeep Twitter Meghan Overdeep is a writer and editor based in Brooklyn who covers all things celebrity and pop culture. She worked as a News Blogger for InStyle for two years and is currently a Senior Staff Writer at Southern Living. InStyle's editorial guidelines Updated on July 26, 2016 @ 10:15AM Pin Share Tweet Email Photo: Dominique Charriau/WireImage They grow up so fast! Naomi Watts took to Instagram on Monday to celebrate the 9th birthday of her eldest son Alexander—whom she calls Sasha—with the sweetest snap of her and her no-so-little boy. "Happy birthday to our first little miracle," she wrote alongside the 'gram that shows her and Sasha laying on a pile of blankets. The birthday boy is wearing a paper crown and gold beads draped around his neck in the photo, and smiles broadly at the camera with his head propped up on his mom's shoulder. "Sweet Sasha is adventurous, loving and kind. A powerful beam of light in our family. Feel so blessed to watch him grow." Sasha, which is the Russian alternative to American nicknames for Alexander—like Alex—is Watts's oldest child with longtime partner Liev Schreiber. Watts, 47, gave birth to Sasha in 2007 after two years of dating Schreiber. They are also parents to 7-year-old son Samuel Kai. Naomi Watts Hits New York with Two Best Friends: Her Cute Pup and Birkenstocks Happy birthday, Sasha!